/* ============================================
Website Tết Đồng Nai 2026 - CSS
Thiết kế theme Đỏ - Vàng - Trắng
============================================ */

/* ===== RESET & VARIABLES ===== */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}

:root {
/* Màu sắc theme Tết Đỏ - Vàng - Trắng */
--primary-red: #D32F2F;      /* Đỏ chủ đạo */
--gold: #FFD700;              /* Vàng kim */
--dark-red: #B71C1C;          /* Đỏ đậm */
--light-red: #FF6B6B;         /* Đỏ nhạt */
--white-bg: #FFFFFF;          /* Trắng sứ */
--cream-bg: #FFF8DC;          /* Kem nhạt */
--text-dark: #2C1810;         /* Chữ tối */
--text-light: #666;           /* Chữ nhạt */
--border-color: #E8D5C4;      /* Border nhạt */

/* Typography */
--font-title: 'Playfair Display', serif;
--font-body: 'Be Vietnam Pro', sans-serif;

/* Spacing */
--spacing-xs: 8px;
--spacing-sm: 12px;
--spacing-md: 16px;
--spacing-lg: 24px;
--spacing-xl: 32px;
--spacing-2xl: 48px;
}

html {
scroll-behavior: smooth;
}

body {
font-family: var(--font-body);
color: var(--text-dark);
background-color: var(--white-bg);
line-height: 1.6;
letter-spacing: 0.3px;
}

a {
color: var(--primary-red);
text-decoration: none;
transition: color 0.3s ease;
}

a:hover {
color: var(--dark-red);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
padding: var(--spacing-md) 0;
position: sticky;
top: 0;
z-index: 1000;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar {
max-width: 1200px;
margin: 0 auto;
padding: 0 var(--spacing-md);
display: flex;
justify-content: space-between;
align-items: center;
}

.logo a {
color: white;
font-size: 1.5rem;
font-weight: bold;
transition: transform 0.3s ease;
}

.logo a:hover {
transform: scale(1.05);
color: var(--gold);
}

.nav-menu {
display: flex;
gap: var(--spacing-xl);
align-items: center;
flex-wrap: wrap;
}

.nav-link {
color: white;
font-weight: 600;
padding: var(--spacing-sm) var(--spacing-md);
border-radius: 4px;
transition: all 0.3s ease;
position: relative;
}

.nav-link:hover,
.nav-link.active {
background-color: var(--gold);
color: var(--primary-red);
}

.nav-link.active::after {
content: '';
position: absolute;
bottom: -8px;
left: 50%;
transform: translateX(-50%);
width: 20px;
height: 3px;
background-color: var(--gold);
border-radius: 2px;
}

/* Menu Toggle (Mobile) */
.menu-toggle {
display: none;
background: none;
border: none;
cursor: pointer;
flex-direction: column;
gap: 6px;
padding: var(--spacing-md);
}

.menu-toggle span {
width: 25px;
height: 3px;
background-color: white;
border-radius: 2px;
transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
transform: rotate(45deg) translate(10px, 10px);
}

.menu-toggle.active span:nth-child(2) {
opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
transform: rotate(-45deg) translate(7px, -7px);
}

/* Dark Mode Toggle Button */
.dark-mode-toggle {
background: rgba(255, 255, 255, 0.2);
border: 2px solid white;
color: rgb(255, 255, 255);
width: 40px;
height: 40px;
border-radius: 50%;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
font-size: 1.1rem;
transition: all 0.3s ease;
margin-left: var(--spacing-lg);
}

.dark-mode-toggle:hover {
background: var(--gold);
border-color: var(--gold);
color: var(--primary-red);
transform: rotate(180deg);
}

.dark-mode-toggle.active {
background: var(--gold);
color: var(--primary-red);
}

/* ===== DARK MODE STYLES ===== */
body.dark-mode {
--white-bg: #1a1a1a;
--cream-bg: #2d2d2d;
--text-dark: #e8e8e8;
--text-light: #a8a8a8;
--border-color: #3d3d3d;
background-color: #1a1a1a;
color: #e8e8e8;
}

body.dark-mode .header {
background: linear-gradient(135deg, #8B0000 0%, #660000 100%);
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

body.dark-mode .left-sidebar {
background: linear-gradient(180deg, #2d2d2d 0%, #252525 100%);
border-color: #3d3d3d;
}

body.dark-mode .sidebar-content h3 {
color: var(--gold);
}

body.dark-mode .page-header {
background: linear-gradient(135deg, #2d2d2d 0%, #252525 100%);
color: var(--gold);
}

body.dark-mode .page-header p {
color: #ffffff;
}

body.dark-mode .section-container h2 {
color: var(--gold);
}

body.dark-mode .feature-card {
background: #2d2d2d;
border-color: #3d3d3d;
}

body.dark-mode .feature-card h3 {
color: var(--gold);
}

body.dark-mode .food-card,
body.dark-mode .destination-card,
body.dark-mode .culture-card {
background: #252525;
border-color: #3d3d3d;
color: #e8e8e8;
}

body.dark-mode .food-card h3,
body.dark-mode .destination-card h3,
body.dark-mode .culture-card h3 {
color: var(--gold);
}

body.dark-mode .quick-link-card {
background: #2d2d2d;
border-color: #3d3d3d;
}

body.dark-mode .quick-link-card h3 {
color: var(--gold);
}

body.dark-mode .footer {
background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
border-top-color: #3d3d3d;
}

body.dark-mode .footer-section h4 {
color: var(--gold);
}

body.dark-mode .nav-link {
color: #e8e8e8;
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
background-color: var(--gold);
color: #8B0000;
}
.main-wrapper {
display: flex;
max-width: 1400px;
margin: 0 auto;
gap: var(--spacing-xl);
padding: var(--spacing-xl) var(--spacing-md);
min-height: calc(100vh - 200px);
}

/* Left Sidebar */
.left-sidebar {
flex: 0 0 250px;
background: linear-gradient(180deg, var(--bg-cream) 0%, white 100%);
padding: var(--spacing-lg);
border-radius: 12px;
height: fit-content;
position: sticky;
top: 100px;
border: 2px solid var(--border-color);
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.sidebar-content h3 {
font-family: var(--font-title);
color: var(--primary-red);
margin-bottom: var(--spacing-lg);
font-size: 1.3rem;
padding-bottom: var(--spacing-md);
border-bottom: 2px solid var(--gold);
}

.sidebar-menu {
list-style: none;
}

.sidebar-menu li {
margin-bottom: var(--spacing-md);
padding-left: var(--spacing-md);
border-left: 3px solid transparent;
transition: all 0.3s ease;
}

.sidebar-menu li:hover {
border-left-color: var(--primary-red);
padding-left: var(--spacing-lg);
}

.sidebar-menu a {
display: inline-block;
font-weight: 600;
color: var(--text-dark);
transition: all 0.3s ease;
}

.sidebar-menu a:hover {
color: var(--primary-red);
transform: translateX(5px);
}

/* Main Content */
.main-content {
flex: 1;
}

/* ===== HERO BANNER ===== */
.hero-banner {
position: relative;
background: url("../assets/banner.jpg") center/cover no-repeat;
padding: 100px var(--spacing-xl);
border-radius: 16px;
margin-bottom: var(--spacing-2xl);
overflow: hidden;
color: white;
text-align: center;
min-height: 500px;
display: flex;
align-items: center;
justify-content: center;
}

.hero-overlay {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text x="10" y="90" font-size="80" opacity="0.03">✨</text><text x="40" y="50" font-size="80" opacity="0.03">🏮</text><text x="70" y="80" font-size="80" opacity="0.03">✨</text></svg>');
pointer-events: none;
}

.hero-content {
position: relative;
z-index: 1;
max-width: 800px;
}

.hero-title {
font-family: var(--font-title);
font-size: clamp(2.5rem, 8vw, 4.5rem);
margin-bottom: var(--spacing-lg);
font-weight: 900;
text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
animation: fadeInDown 0.8s ease;
}

.hero-subtitle {
font-size: clamp(1.1rem, 3vw, 1.5rem);
margin-bottom: var(--spacing-2xl);
opacity: 0.95;
font-weight: 300;
animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-cta {
display: flex;
gap: var(--spacing-lg);
justify-content: center;
flex-wrap: wrap;
animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* Buttons */
.btn {
padding: 14px 32px;
font-size: 1.1rem;
font-weight: 700;
border: none;
border-radius: 8px;
cursor: pointer;
transition: all 0.3s ease;
display: inline-block;
text-align: center;
white-space: nowrap;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
text-decoration: none;
font-family: var(--font-body);
}

.btn-primary {
background: linear-gradient(135deg, var(--gold) 0%, #FFC700 100%);
color: var(--primary-red);
}

.btn-primary:hover {
transform: translateY(-3px);
box-shadow: 0 6px 20px rgba(211, 47, 47, 0.3);
color: var(--dark-red);
}

.btn-secondary {
background: rgba(255, 255, 255, 0.2);
color: white;
border: 2px solid white;
}

.btn-secondary:hover {
background: rgba(255, 255, 255, 0.3);
transform: translateY(-3px);
}

/* ===== SECTIONS ===== */
.page-header {
text-align: center;
margin-bottom: var(--spacing-2xl);
padding: var(--spacing-2xl) var(--spacing-xl);
background: linear-gradient(135deg, var(--bg-cream) 0%, white 100%);
border-radius: 12px;
border-left: 5px solid var(--primary-red);
}

.page-header h1 {
font-family: var(--font-title);
font-size: clamp(2rem, 6vw, 3rem);
color: var(--primary-red);
margin-bottom: var(--spacing-md);
}

.page-header p {
font-size: 1.2rem;
color: var(--text-light);
font-weight: 300;
}

.section-container {
max-width: 1200px;
}

.intro-section,
.food-section,
.destination-section,
.culture-section,
.quick-links-section,
.navigation-links {
margin-bottom: var(--spacing-2xl);
padding: var(--spacing-2xl) var(--spacing-xl);
background: rgb(255, 255, 255);
border-radius: 12px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
border-top: 4px solid var(--primary-red);
}

.intro-section h2,
.food-section h2,
.destination-section h2,
.culture-section h2,
.quick-links-section h2 {
font-family: var(--font-title);
font-size: 2.2rem;
color: var(--primary-red);
margin-bottom: var(--spacing-xl);
text-align: center;
}

.intro-section > .section-container > p {
font-size: 1.1rem;
line-height: 1.8;
color: var(--text-light);
text-align: center;
margin-bottom: var(--spacing-xl);
font-weight: 300;
}
/* ===== FOOD CARD FLIP ===== */

.food-card{
    height: 340px;
    perspective: 1000px;
    border-radius: 16px;
}

/* phần xoay */
.food-card-inner{
    width:100%;
    height:100%;
    position:relative;
    transform-style: preserve-3d;
    transition: transform 0.6s ease;
}

/* hover để lật */
.food-card:hover .food-card-inner{
    transform: rotateY(180deg);
}


/* ===== FRONT + BACK ===== */

.food-card-front,
.food-card-back{
    position:absolute;
    width:100%;
    height:100%;
    top:0;
    left:0;

    border-radius:16px;
    overflow:hidden;

    background: linear-gradient(135deg, #1e1e1e, #2a2a2a);
    border:1px solid rgba(255,255,255,0.08);

    padding:18px;

    backface-visibility: hidden;

    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}


/* mặt sau */
.food-card-back{
    transform: rotateY(180deg);
    overflow-y:auto;
}


/* ===== IMAGE FIXED FRAME ===== */

.food-image{
    width:100%;
    height:160px;
    border-radius:12px;
    overflow:hidden;
    margin-bottom:12px;
}

.food-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
}


/* ===== TITLE ===== */

.food-card-front h3,
.food-card-back h3{
    text-align:center;
    color:#ffd54f;
    margin-bottom:10px;
}


/* ===== TEXT ===== */

.food-card-back p{
    font-size:14px;
    line-height:1.6;
    margin-bottom:8px;
}
.view-text{
    display:block;
    text-align:center;
    color:#00bfff;          /* xanh giống link */
    text-decoration:underline;
    font-weight:500;
    margin-top:10px;
    cursor:pointer;         /* giống link */
    transition:0.3s;
}



/* ===== HOVER EFFECT ===== */

.food-card:hover{
    transform: translateY(-6px);
    transition:0.3s;
}

/* ===== PLACE CARD FLIP ===== */

.place-card{
    height: 340px;
    perspective: 1000px;
    border-radius: 16px;
}
.placecue-overlay{
    color: rgb(0, 0, 0);
}

/* phần xoay */
.place-card-inner{
    width:100%;
    height:100%;
    position:relative;
    transform-style: preserve-3d;
    transition: transform 0.6s ease;
}


/* hover lật */
.place-card:hover .place-card-inner{
    transform: rotateY(180deg);
}



/* ===== FRONT + BACK ===== */

.place-card-front,
.place-card-back{

    position:absolute;
    width:100%;
    height:100%;

    border-radius:16px;
    overflow:hidden;

    background: linear-gradient(135deg,#1e1e1e,#2a2a2a);
    border:1px solid rgba(255,255,255,0.1);

    padding:20px;

    backface-visibility:hidden;

    box-shadow:0 10px 25px rgba(0,0,0,0.4);

    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
}



/* mặt trước */
.place-card-front h3{
    margin-top:10px;
    color:#ffd700;
}

.place-icon{
    font-size:40px;
    color:#ffd700;
}

.flip-hint{
    margin-top:15px;
    font-size:0.9rem;
    color:#aaa;
}



/* mặt sau */
.place-card-back{
    transform: rotateY(180deg);
    overflow-y:auto;
    text-align:left;
}

/* ============================= */
/* CULTURE GRID */
/* ============================= */

.culture-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:30px;
    margin-top:30px;
}


/* ============================= */
/* FLIP CARD CONTAINER */
/* ============================= */

.culture-flip-card{

    height:360px;

    perspective:1000px;

    border-radius:18px;

}


/* inner */

.culture-flip-inner{

    width:100%;
    height:100%;

    position:relative;

    transform-style:preserve-3d;

    transition:transform 0.7s ease;

}


/* flip on hover */

.culture-flip-card:hover .culture-flip-inner{

    transform:rotateY(180deg);

}



/* ============================= */
/* FRONT + BACK */
/* ============================= */

.culture-flip-front,
.culture-flip-back{

    position:absolute;

    width:100%;
    height:100%;

    top:0;
    left:0;

    border-radius:18px;

    overflow:hidden;

    backface-visibility:hidden;

    box-shadow:0 15px 35px rgba(0,0,0,0.35);

}



/* ============================= */
/* FRONT */
/* ============================= */

.culture-flip-front{

    background:#111;

}


.culture-flip-front img{

    width:100%;
    height:100%;

    object-fit:cover;

    transition:transform 0.4s ease;

}


/* zoom image */

.culture-flip-card:hover img{

    transform:scale(1.08);

}


/* title overlay */

.culture-flip-front h3{

    position:absolute;

    bottom:0;

    width:100%;

    padding:15px;

    background:linear-gradient(to top,rgba(0,0,0,0.8),transparent);

    color:white;

    margin:0;

    font-size:20px;

}



/* ============================= */
/* BACK */
/* ============================= */

.culture-flip-back{

    background:linear-gradient(135deg,#1e1e1e,#2a2a2a);

    color:white;

    transform:rotateY(180deg);

    padding:20px;

    display:flex;

    flex-direction:column;

    justify-content:center;

    text-align:center;

}


.culture-flip-back h3{

    margin-bottom:10px;

}


.culture-flip-back p{

    font-size:14px;

    opacity:0.9;

}
/* text */
#cultureTitle{

    margin-bottom:15px;

    font-size:24px;

}

#cultureContent{

    line-height:1.6;

    opacity:0.95;

}


/* ============================= */
/* BUTTON */
/* ============================= */

.culture-open-btn{

    margin-top:15px;

    padding:10px 16px;

    border:none;

    border-radius:10px;

    cursor:pointer;

    font-weight:bold;

    background:linear-gradient(135deg,#ff3b3b,#ff7a00);

    color:white;

    transition:0.3s;

}


.culture-open-btn:hover{

    transform:scale(1.05);

    box-shadow:0 8px 20px rgba(255,80,0,0.4);

}

/* CONTAINER */
.culture-section .section-container{
    max-width:1400px;
    margin:auto;
    padding:60px 20px;
}

/* TITLE */
#truyen-thong{
    font-size:36px;
    text-align:center;
    margin-bottom:50px;
}


/* GRID */
.tradition-grid{
    display:grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap:40px;
}


/* CARD */
.tradition-card{

    background:#ffffff;
    padding:45px;
    border-radius:22px;

    font-size:19px;
    line-height:1.8;

    text-align:center;

    border:1px solid rgba(0,0,0,0.12);

    box-shadow:0 12px 30px rgba(0,0,0,0.12);

    transition: transform 0.35s ease,
                box-shadow 0.35s ease,
                background 0.35s ease;

}


/* ZOOM + nổi mạnh */
.tradition-card:hover{

    transform: scale(1.08);

    box-shadow:0 30px 70px rgba(0,0,0,0.25);

    background:#fff8e1; /* vàng rất nhạt, hợp chủ đề Tết */

}


/* title */
.tradition-card h3{
    font-size:28px;
    margin-bottom:20px;
}


/* DARK MODE */
@media (prefers-color-scheme: dark){

    .tradition-card{

        background: rgba(255,255,255,0.08);
        border:1px solid rgba(255,255,255,0.2);
        box-shadow:0 15px 40px rgba(0,0,0,0.7);

    }

    .tradition-card:hover{

        background: rgba(255,215,0,0.15);
        box-shadow:0 35px 80px rgba(0,0,0,0.9);

    }

}

/* ============================= */
/* DETAIL PANEL */
/* ============================= */

.culture-detail-panel{

    position:fixed;

    top:0;
    left:0;

    width:100%;
    height:100%;

    background:rgba(0,0,0,0.6);

    display:none;

    align-items:center;

    justify-content:center;

    z-index:999;

}

/* box */

.culture-detail-box{

    background:#1e1e1e;
    color:white;

    padding:30px;

    border-radius:16px;

    max-width:700px;
    width:90%;

    min-height:300px;   /* QUAN TRỌNG */

    position:relative;

    animation:cultureFade 0.3s ease;

    display:flex;
    flex-direction:column;
    justify-content:center;

}
/* close */

.culture-close-btn{

    position:absolute;

    right:15px;

    top:10px;

    font-size:28px;

    cursor:pointer;

}
/* animation */

@keyframes cultureFade{

    from{

        transform:translateY(40px);
        opacity:0;

    }

    to{

        transform:translateY(0);
        opacity:1;

    }

}
/* ============================= */
/* MOBILE */
/* ============================= */

@media(max-width:768px){

    .culture-flip-card{

        height:300px;

    }

}

/* ===== GRIDS ===== */
.features-grid,
.food-grid,
.destination-grid,
.culture-grid,
.quick-links-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: var(--spacing-xl);
margin-top: var(--spacing-xl);
}

/* Feature Cards */
.feature-card,
.food-card,
.destination-card,
.culture-card {
    background: linear-gradient(135deg, var(--bg-cream) 0%, white 100%);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);

    /* thêm */
    position: relative;
    overflow: hidden;
}

/* overlay dùng chung */
.feature-card::before,
.food-card::before,
.destination-card::before,
.culture-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0,0,0,0.55),
        rgba(0,0,0,0.25),
        rgba(0,0,0,0)
    );
    opacity: 0; /* mặc định không hiện */
    transition: opacity 0.3s ease;
    z-index: 0;
}
.feature-card:hover::before {
    opacity: 1;
    background: linear-gradient(
        to top,
        rgba(0,0,0,0.75),
        rgba(0,0,0,0.4),
        rgba(0,0,0,0.1)
    );
}

/* chỉ hiện overlay khi card có background-image */
.feature-card[style*="background"],
.food-card[style*="background"],
.destination-card[style*="background"],
.culture-card[style*="background"] {
    color: white;
}

.feature-card[style*="background"]::before,
.food-card[style*="background"]::before,
.destination-card[style*="background"]::before,
.culture-card[style*="background"]::before {
    opacity: 1;
}

/* đảm bảo chữ nằm trên overlay */
.feature-card > *,
.food-card > *,
.destination-card > *,
.culture-card > * {
    position: relative;
    z-index: 1;
}

/* text shadow */
.feature-card p,
.food-card p,
.destination-card p,
.culture-card p {
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 6px rgba(0,0,0,0.8);
}
/* Feature icon container */
.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
    backdrop-filter: blur(4px);

    display: flex;
    align-items: center;
    justify-content: center;

    margin: 0 auto 15px auto; 
    transition: all 0.3s ease;
}

/* icon */
.feature-icon i {
    font-size: 32px;
    color: white;
    
}

/* hover effect */
.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
    background: rgba(255,255,255,0.28);
}

/* Quick Links */
.quick-link-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);

    /* dùng ảnh nền inline vẫn hoạt động */
    background-size: cover;
    background-position: center;

    color: white;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    cursor: pointer;
    min-height: 250px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);

    /* bắt buộc cho overlay + zoom */
    position: relative;
    overflow: hidden;
}

/* overlay */
.quick-link-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0,0,0,0.65),
        rgba(0,0,0,0.35),
        rgba(0,0,0,0.1)
    );
    transition: background 0.35s ease, opacity 0.35s ease;
    z-index: 0;
}

/* đảm bảo content nằm trên */
.quick-link-card > * {
    position: relative;
    z-index: 1;
}

/* hover phóng to card */
.quick-link-card:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

/* hover làm tối hơn */
.quick-link-card:hover::before {
    background: linear-gradient(
        to top,
        rgba(0,0,0,0.8),
        rgba(0,0,0,0.45),
        rgba(0,0,0,0.15)
    );
}

/* hiệu ứng chữ */
.quick-link-card h3 {
    color: white;
    font-size: 1.3rem;
    margin-top: var(--spacing-lg);
    text-shadow: 0 3px 8px rgba(0,0,0,0.8);
    transition: transform 0.3s ease;
}

.quick-link-card p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.95rem;
    margin-top: var(--spacing-md);
    text-shadow: 0 2px 6px rgba(0,0,0,0.8);
    transition: transform 0.3s ease;
}

.quick-link-card:hover h3,
.quick-link-card:hover p {
    transform: translateY(-4px);
}
/* container icon */
.quick-link-image {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(4px);

    display: flex;
    align-items: center;
    justify-content: center;

    margin-bottom: 15px;
    transition: all 0.3s ease;
}

/* icon */
.quick-link-image i {
    font-size: 32px;
    color: white;
}

/* hover */
.quick-link-card:hover .quick-link-image {
    transform: scale(1.15) rotate(5deg);
    background: rgba(255,255,255,0.25);
}
/* ===== Navigation Section ===== */
.navigation-links{
    background-image: url("/assets/nav-bg.jpg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% 100%;
    background-color: #b31217;
    padding: 60px 20px;
    text-align: center;
}

/* tiêu đề */
.navigation-links h2{
    color: #ffd700; /* vàng đậm hơn */
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow:
        0 2px 4px rgba(0,0,0,0.8),
        0 0 10px rgba(255,215,0,0.6);
}

/* grid */
.nav-links-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    margin-top: 20px;
    align-items: center;
}

/* button */
.nav-link-btn{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;

    padding: 18px 30px;
    background: linear-gradient(135deg, #d62828, #a4161a);
    color: #ffffff;

    border-radius: 12px;
    font-weight: 700;
    font-size: 1.05rem;
    text-decoration: none;

    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

/* icon */
.nav-link-btn i{
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

/* hover */
.nav-link-btn:hover{
    transform: translateY(-4px) scale(1.02);

    background: linear-gradient(135deg, #ff3b3b, #c1121f);

    color: #fff;

    box-shadow:
        0 8px 25px rgba(0,0,0,0.6),
        0 0 15px rgba(255,0,0,0.6);
}

.nav-link-btn:hover i{
    transform: translateX(6px);
}

/* ===== FOOTER ===== */
.footer {
background: linear-gradient(135deg, var(--text-dark) 0%, #1a1a1a 100%);
color: white;
margin-top: var(--spacing-2xl);
padding-top: var(--spacing-2xl);
}

.footer-container {
max-width: 1200px;
margin: 0 auto;
padding: 0 var(--spacing-md);
}

/* Footer Content - 3 Columns */
.footer-content {
display: grid;
grid-template-columns: 2fr 2fr 1fr;
gap: 40px;
align-items: flex-start;
margin-bottom: var(--spacing-xl);
}

/* Footer Map Section */
.footer-map {
min-height: 280px;
}

.footer-map iframe {
max-width: 100%;
border-radius: 8px !important;
}

/* Footer Section */
.footer-section {
padding: var(--spacing-lg) 0;
}

.footer-section h4 {
color: var(--gold);
margin-bottom: var(--spacing-md);
font-size: 1.1rem;
font-weight: 700;
}

.footer-section p {
line-height: 1.8;
opacity: 0.9;
margin-bottom: var(--spacing-sm);
font-size: 0.95rem;
}

.footer-section ul {
list-style: none;
}

.footer-section ul li {
margin-bottom: var(--spacing-sm);
}

.footer-section a {
color: rgba(255, 255, 255, 0.8);
transition: all 0.3s ease;
display: inline-block;
}

.footer-section a:hover {
color: var(--gold);
transform: translateX(4px);
}

/* Quick Links in Footer */
.quick-links {
display: flex;
flex-wrap: wrap;
gap: var(--spacing-md);
margin-top: var(--spacing-lg);
}

.quick-link {
color: rgba(255, 255, 255, 0.8);
padding: 6px 12px;
background: rgba(255, 255, 255, 0.1);
border-radius: 4px;
font-size: 0.9rem;
transition: all 0.3s ease;
}

.quick-link:hover {
background: var(--gold);
color: var(--primary-red);
}

/* Social Icons - FontAwesome */
.footer-socials {
display: flex;
flex-direction: column;
align-items: flex-start;
justify-content: flex-start;
}

.footer-socials h4 {
width: 100%;
}

/* vòng tròn */
.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-red), var(--dark-red));
    color: #fff;
    font-size: 20px;
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    line-height: 0;
    position: relative;
    padding: 0%;
}

.social-icon i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    line-height: 1;
    margin: 0;
    padding: 0;
}

/* hover chuẩn */
.social-icon:hover {
    background: linear-gradient(135deg, #FFD700, #FF9800);
    color: #8b0000;
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(255, 193, 7, 0.45);
}

/* QUAN TRỌNG: vô hiệu hover chung của footer */
.footer-section a:hover {
    background: none;
}

.footer-bottom {
border-top: 1px solid rgba(255, 255, 255, 0.1);
padding: var(--spacing-lg) 0;
text-align: center;
color: rgba(255, 255, 255, 0.7);
font-size: 0.95rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInDown {
from {
    opacity: 0;
    transform: translateY(-30px);
}
to {
    opacity: 1;
    transform: translateY(0);
}
}

@keyframes fadeInUp {
from {
    opacity: 0;
    transform: translateY(30px);
}
to {
    opacity: 1;
    transform: translateY(0);
}
}

@keyframes float {
0%, 100% {
    transform: translateY(0px);
}
50% {
    transform: translateY(-10px);
}
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
.main-wrapper {
    flex-direction: column;
    gap: var(--spacing-lg);
}

.left-sidebar {
    flex: 0 0 260px;
    width: 260px;
    min-width: 240px;
    position: static;
    margin-bottom: var(--spacing-lg);
}
.left-sidebar h3 {
    font-size: clamp(14px, 1vw, 18px);
    white-space: nowrap;
}

.features-grid,
.food-grid,
.destination-grid,
.culture-grid,
.quick-links-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
.menu-toggle {
    display: flex;
}

.nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
    padding: var(--spacing-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    width: 100%;
    z-index: 999;
}

.nav-menu.active {
    display: flex;
}

.nav-link {
    padding: var(--spacing-md);
    width: 100%;
    text-align: left;
    border-radius: 0;
}

.nav-link.active::after {
    display: none;
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
}

.navbar {
    padding: 0 var(--spacing-md);
}

.main-wrapper {
    flex-direction: column;
    padding: var(--spacing-lg) var(--spacing-md);
    gap: var(--spacing-lg);
}

.left-sidebar {
    flex: 1;
    width: 100%;
    position: static;
}

.hero-banner {
    padding: 60px var(--spacing-lg);
    min-height: 350px;
    border-radius: 8px;
}

.hero-title {
    font-size: 2rem;
}

.hero-subtitle {
    font-size: 1rem;
}

.hero-cta {
    flex-direction: column;
    align-items: stretch;
}

.btn {
    width: 100%;
}

.features-grid,
.food-grid,
.destination-grid,
.culture-grid,
.quick-links-grid,
.nav-links-grid {
    grid-template-columns: 1fr;
}

.section-container,
.intro-section,
.food-section,
.destination-section,
.culture-section,
.page-header {
    padding: var(--spacing-lg) var(--spacing-md);
}

.intro-section h2,
.food-section h2,
.destination-section h2,
.culture-section h2,
.quick-links-section h2 {
    font-size: 1.6rem;
}

.footer-content {
    grid-template-columns: 1fr;
}

.social-links {
    justify-content: center;
}

.hero-cta .btn {
    padding: 12px 24px;
    font-size: 1rem;
}
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
:root {
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 28px;
}

.logo a {
    font-size: 1.2rem;
}

.nav-menu {
    top: 60px;
}

.hero-banner {
    padding: 40px var(--spacing-md);
    min-height: 280px;
}

.hero-title {
    font-size: 1.5rem;
}

.hero-subtitle {
    font-size: 0.9rem;
}

.feature-icon,
.quick-link-image {
    font-size: 2.5rem;
}

.feature-card h3,
.food-card h3,
.destination-card h3,
.culture-card h3 {
    font-size: 1.1rem;
    text-shadow: 0 2px 6px rgba(0,0,0,0.8);

}

.quick-link-card {
    min-height: 200px;
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-section h4 {
    font-size: 1rem;
}
}

/* ===== UTILITY CLASSES ===== */
.text-center {
text-align: center;
}

.text-right {
text-align: right;
}

.mt-xl {
margin-top: var(--spacing-xl);
}

.mb-xl {
margin-bottom: var(--spacing-xl);
}

.pt-xl {
padding-top: var(--spacing-xl);
}

.pb-xl {
padding-bottom: var(--spacing-xl);
}

/* Smooth scroll behavior */
html {
scroll-behavior: smooth;
}

/* Selection color */
::selection {
background-color: var(--primary-red);
color: white;
}

/* Scrollbar styling */
::-webkit-scrollbar {
width: 8px;
}

::-webkit-scrollbar-track {
background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
background: var(--primary-red);
border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
background: var(--dark-red);
}